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14.14 Resource EvidenceVariable - Content

Clinical Decision Support icon Work GroupMaturity Level: 1 Trial UseSecurity Category: Business Compartments: No defined compartments

The EvidenceVariable resource describes an element that knowledge (Evidence) is about.

14.14.1 Scope and Usage

This resource is a definition resource from a FHIR workflow perspective - see Workflow, specifically Definition.

The scope of the EvidenceVariable Resource is to describe an element that knowledge (evidence) is about. The EvidenceVariable Resources are expected to be used with Evidence Resources to facilitate searching and knowledge representation.

Evidence may be reported for different types of knowledge. One commonly used format for expression of what evidence is about is the "PICO" format. PICO stands for:

Population - the population within which exposures and outcomes are being considered

Intervention - the conditional state or exposure state being described for which one is expressing the risk of or effect on an outcome

Comparison - the alternative conditional state or alternative exposure state when one is comparing states for the effect on an outcome

Outcome - the result or effect of an intervention or exposure in a population

PICO (and its variants like PECO or PICOT) is a universal acronym used in evidence-based medicine communities to clearly express research questions and evidence findings.

The EvidenceVariable Resource allows expression of the components of a PICO question in codeable and reusable formats. The EvidenceVariable.definition element has a CodeableReference datatype which can define the PICO component as a concept and/or reference to a Group Resource.

14.14.2 Boundaries and Relationships

The Resource describing evidence findings (Evidence) will reference EvidenceVariable to describe what the evidence findings are about.

14.14.3 References to this Resource

14.14.4 Resource Content

Structure

NameFlagsCard.TypeDescription & Constraintsdoco
.. EvidenceVariable TU DomainResource A definition of an exposure, outcome, or other variable
+ Warning: Name should be usable as an identifier for the module by machine processing applications such as code generation

Elements defined in Ancestors: id, meta, implicitRules, language, text, contained, extension, modifierExtension
Interfaces Implemented: MetadataResource
... url ΣC 0..1 uri Canonical identifier for this evidence variable, represented as a URI (globally unique)
+ Warning: URL should not contain | or # - these characters make processing canonical references problematic
... identifier Σ 0..* Identifier Additional identifier for the evidence variable

... version Σ 0..1 string Business version of the evidence variable
... versionAlgorithm[x] Σ 0..1 How to compare versions
Binding: Version Algorithm (Extensible)
.... versionAlgorithmString string
.... versionAlgorithmCoding Coding
... name ΣC 0..1 string Name for this evidence variable (computer friendly)
... title Σ 0..1 string Name for this evidence variable (human friendly)
... shortTitle Σ 0..1 string Title for use in informal contexts
... status ?!Σ 1..1 code draft | active | retired | unknown
Binding: PublicationStatus (Required)
... experimental 0..1 boolean For testing purposes, not real usage
... date Σ 0..1 dateTime Date last changed
... publisher Σ 0..1 string Name of the publisher/steward (organization or individual)
... contact Σ 0..* ContactDetail Contact details for the publisher

... description Σ 0..1 markdown Natural language description of the evidence variable
... note 0..* Annotation Used for footnotes or explanatory notes

... useContext Σ 0..* UsageContext The context that the content is intended to support

... purpose 0..1 markdown Why this EvidenceVariable is defined
... copyright 0..1 markdown Use and/or publishing restrictions
... copyrightLabel T 0..1 string Copyright holder and year(s)
... approvalDate 0..1 date When the resource was approved by publisher
... lastReviewDate 0..1 date When the resource was last reviewed by the publisher
... effectivePeriod 0..1 Period When the resource is expected to be used
... author 0..* ContactDetail Who authored the content

... editor 0..* ContactDetail Who edited the content

... reviewer 0..* ContactDetail Who reviewed the content

... endorser 0..* ContactDetail Who endorsed the content

... relatedArtifact 0..* RelatedArtifact Additional documentation, citations, etc

... actual 0..1 boolean Actual or conceptual
... definition Σ 0..1 CodeableReference(Group) Defines the variable with a concept and/or Reference
Binding: Evidence Variable Definition (Example)
... handling 0..1 code continuous | dichotomous | ordinal | polychotomous
Binding: Evidence Variable Handling (Required)
... category 0..* BackboneElement A grouping for ordinal or polychotomous variables

.... name 0..1 string Description of the grouping
.... value[x] 0..1 Definition of the grouping
..... valueCodeableConcept CodeableConcept
..... valueQuantity Quantity
..... valueRange Range
..... valueReference Reference(Group)

doco Documentation for this format icon

See the Extensions for this resource

UML Diagram (Legend)

EvidenceVariable (DomainResource) +MetadataResourceAn absolute URI that is used to identify this evidence variable when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which an authoritative instance of this evidence variable is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the evidence variable is stored on different serversurl : uri [0..1]A formal identifier that is used to identify this evidence variable when it is represented in other formats, or referenced in a specification, model, design or an instanceidentifier : Identifier [0..*]The identifier that is used to identify this version of the evidence variable when it is referenced in a specification, model, design or instance. This is an arbitrary value managed by the evidence variable author and is not expected to be globally unique. For example, it might be a timestamp (e.g. yyyymmdd) if a managed version is not available. There is also no expectation that versions can be placed in a lexicographical sequence. To provide a version consistent with the Decision Support Service specification, use the format Major.Minor.Revision (e.g. 1.0.0). For more information on versioning knowledge assets, refer to the Decision Support Service specification. Note that a version is required for non-experimental active artifactsversion : string [0..1]Indicates the mechanism used to compare versions to determine which is more currentversionAlgorithm[x] : DataType [0..1] « string|Coding; null (Strength=Extensible) VersionAlgorithm+ »A natural language name identifying the evidence variable. This name should be usable as an identifier for the module by machine processing applications such as code generationname : string [0..1] « This element has or is affected by some invariantsC »A short, descriptive, user-friendly title for the evidence variabletitle : string [0..1]The short title provides an alternate title for use in informal descriptive contexts where the full, formal title is not necessaryshortTitle : string [0..1]The status of this evidence variable. Enables tracking the life-cycle of the content (this element modifies the meaning of other elements)status : code [1..1] « null (Strength=Required)PublicationStatus! »A Boolean value to indicate that this resource is authored for testing purposes (or education/evaluation/marketing) and is not intended to be used for genuine usageexperimental : boolean [0..1]The date (and optionally time) when the evidence variable was last significantly changed. The date must change when the business version changes and it must change if the status code changes. In addition, it should change when the substantive content of the evidence variable changesdate : dateTime [0..1]The name of the organization or individual responsible for the release and ongoing maintenance of the evidence variablepublisher : string [0..1]Contact details to assist a user in finding and communicating with the publishercontact : ContactDetail [0..*]A free text natural language description of the evidence variable from a consumer's perspectivedescription : markdown [0..1]A human-readable string to clarify or explain concepts about the resourcenote : Annotation [0..*]The content was developed with a focus and intent of supporting the contexts that are listed. These contexts may be general categories (gender, age, ...) or may be references to specific programs (insurance plans, studies, ...) and may be used to assist with indexing and searching for appropriate evidence variable instancesuseContext : UsageContext [0..*]Explanation of why this EvidenceVariable is needed and why it has been designed as it haspurpose : markdown [0..1]A copyright statement relating to the resource and/or its contents. Copyright statements are generally legal restrictions on the use and publishing of the resourcecopyright : markdown [0..1]A short string (<50 characters), suitable for inclusion in a page footer that identifies the copyright holder, effective period, and optionally whether rights are resctricted. (e.g. 'All rights reserved', 'Some rights reserved')copyrightLabel : string [0..1]The date on which the resource content was approved by the publisher. Approval happens once when the content is officially approved for usage. See guidance around (not) making local changes to elements [here](canonicalresource.html#localization)approvalDate : date [0..1]The date on which the resource content was last reviewed. Review happens periodically after approval but does not change the original approval datelastReviewDate : date [0..1]The period during which the resource content was or is planned to be in active useeffectivePeriod : Period [0..1]An individiual or organization primarily involved in the creation and maintenance of the contentauthor : ContactDetail [0..*]An individual or organization primarily responsible for internal coherence of the contenteditor : ContactDetail [0..*]An individual or organization asserted by the publisher to be primarily responsible for review of some aspect of the contentreviewer : ContactDetail [0..*]An individual or organization asserted by the publisher to be responsible for officially endorsing the content for use in some settingendorser : ContactDetail [0..*]Related artifacts such as additional documentation, justification, or bibliographic referencesrelatedArtifact : RelatedArtifact [0..*]True if the actual variable measured, false if a conceptual representation of the intended variableactual : boolean [0..1]Defines the variable with a concept and/or Referencedefinition : CodeableReference [0..1] « Group; null (Strength=Example) EvidenceVariableDefinition?? »The method of handling in statistical analysishandling : code [0..1] « null (Strength=Required)EvidenceVariableHandling! »CategoryDescription of the groupingname : string [0..1]Definition of the groupingvalue[x] : DataType [0..1] « CodeableConcept|Quantity|Range| Reference(Group) »A grouping for ordinal or polychotomous variablescategory[0..*]

XML Template

<EvidenceVariable xmlns="http://hl7.org/fhir"> doco
 <!-- from Resource: id, meta, implicitRules, and language -->
 <!-- from DomainResource: text, contained, extension, and modifierExtension -->
 <url value="[uri]"/><!-- 0..1 Canonical identifier for this evidence variable, represented as a URI (globally unique) -->
 <identifier><!-- 0..* Identifier Additional identifier for the evidence variable --></identifier>
 <version value="[string]"/><!-- 0..1 Business version of the evidence variable -->
 <versionAlgorithm[x]><!-- 0..1 string|Coding How to compare versions --></versionAlgorithm[x]>
 <name value="[string]"/><!-- I 0..1 Name for this evidence variable (computer friendly) -->
 <title value="[string]"/><!-- 0..1 Name for this evidence variable (human friendly) -->
 <shortTitle value="[string]"/><!-- 0..1 Title for use in informal contexts -->
 <status value="[code]"/><!-- 1..1 draft | active | retired | unknown -->
 <experimental value="[boolean]"/><!-- 0..1 For testing purposes, not real usage -->
 <date value="[dateTime]"/><!-- 0..1 Date last changed -->
 <publisher value="[string]"/><!-- 0..1 Name of the publisher/steward (organization or individual) -->
 <contact><!-- 0..* ContactDetail Contact details for the publisher --></contact>
 <description value="[markdown]"/><!-- 0..1 Natural language description of the evidence variable -->
 <note><!-- 0..* Annotation Used for footnotes or explanatory notes --></note>
 <useContext><!-- 0..* UsageContext The context that the content is intended to support --></useContext>
 <purpose value="[markdown]"/><!-- 0..1 Why this EvidenceVariable is defined -->
 <copyright value="[markdown]"/><!-- 0..1 Use and/or publishing restrictions -->
 <copyrightLabel value="[string]"/><!-- 0..1 Copyright holder and year(s) -->
 <approvalDate value="[date]"/><!-- 0..1 When the resource was approved by publisher -->
 <lastReviewDate value="[date]"/><!-- 0..1 When the resource was last reviewed by the publisher -->
 <effectivePeriod><!-- 0..1 Period When the resource is expected to be used --></effectivePeriod>
 <author><!-- 0..* ContactDetail Who authored the content --></author>
 <editor><!-- 0..* ContactDetail Who edited the content --></editor>
 <reviewer><!-- 0..* ContactDetail Who reviewed the content --></reviewer>
 <endorser><!-- 0..* ContactDetail Who endorsed the content --></endorser>
 <relatedArtifact><!-- 0..* RelatedArtifact Additional documentation, citations, etc --></relatedArtifact>
 <actual value="[boolean]"/><!-- 0..1 Actual or conceptual -->
 <definition><!-- 0..1 CodeableReference(Group) Defines the variable with a concept and/or Reference --></definition>
 <handling value="[code]"/><!-- 0..1 continuous | dichotomous | ordinal | polychotomous -->
 <category>  <!-- 0..* A grouping for ordinal or polychotomous variables -->
  <name value="[string]"/><!-- 0..1 Description of the grouping -->
  <value[x]><!-- 0..1 CodeableConcept|Quantity|Range|Reference(Group) Definition of the grouping --></value[x]>
 </category>
</EvidenceVariable>

JSON Template

{doco
  "resourceType" : "EvidenceVariable",
  // from Resource: id, meta, implicitRules, and language
  // from DomainResource: text, contained, extension, and modifierExtension
  "url" : "<uri>", // Canonical identifier for this evidence variable, represented as a URI (globally unique)
  "identifier" : [{ Identifier }], // Additional identifier for the evidence variable
  "version" : "<string>", // Business version of the evidence variable
  // versionAlgorithm[x]: How to compare versions. One of these 2:
  "versionAlgorithmString" : "<string>",
  "versionAlgorithmCoding" : { Coding },
  "name" : "<string>", // I Name for this evidence variable (computer friendly)
  "title" : "<string>", // Name for this evidence variable (human friendly)
  "shortTitle" : "<string>", // Title for use in informal contexts
  "status" : "<code>", // R!  draft | active | retired | unknown
  "experimental" : <boolean>, // For testing purposes, not real usage
  "date" : "<dateTime>", // Date last changed
  "publisher" : "<string>", // Name of the publisher/steward (organization or individual)
  "contact" : [{ ContactDetail }], // Contact details for the publisher
  "description" : "<markdown>", // Natural language description of the evidence variable
  "note" : [{ Annotation }], // Used for footnotes or explanatory notes
  "useContext" : [{ UsageContext }], // The context that the content is intended to support
  "purpose" : "<markdown>", // Why this EvidenceVariable is defined
  "copyright" : "<markdown>", // Use and/or publishing restrictions
  "copyrightLabel" : "<string>", // Copyright holder and year(s)
  "approvalDate" : "<date>", // When the resource was approved by publisher
  "lastReviewDate" : "<date>", // When the resource was last reviewed by the publisher
  "effectivePeriod" : { Period }, // When the resource is expected to be used
  "author" : [{ ContactDetail }], // Who authored the content
  "editor" : [{ ContactDetail }], // Who edited the content
  "reviewer" : [{ ContactDetail }], // Who reviewed the content
  "endorser" : [{ ContactDetail }], // Who endorsed the content
  "relatedArtifact" : [{ RelatedArtifact }], // Additional documentation, citations, etc
  "actual" : <boolean>, // Actual or conceptual
  "definition" : { CodeableReference(Group) }, // Defines the variable with a concept and/or Reference
  "handling" : "<code>", // continuous | dichotomous | ordinal | polychotomous
  "category" : [{ // A grouping for ordinal or polychotomous variables
    "name" : "<string>", // Description of the grouping
    // value[x]: Definition of the grouping. One of these 4:
    "valueCodeableConcept" : { CodeableConcept },
    "valueQuantity" : { Quantity },
    "valueRange" : { Range },
    "valueReference" : { Reference(Group) }
  }]
}

Turtle Template

@prefix fhir: <http://hl7.org/fhir/> .doco


[ a fhir:EvidenceVariable;
  fhir:nodeRole fhir:treeRoot; # if this is the parser root

  # from Resource: .id, .meta, .implicitRules, and .language
  # from DomainResource: .text, .contained, .extension, and .modifierExtension
  fhir:url [ uri ] ; # 0..1 Canonical identifier for this evidence variable, represented as a URI (globally unique)
  fhir:identifier  ( [ Identifier ] ... ) ; # 0..* Additional identifier for the evidence variable
  fhir:version [ string ] ; # 0..1 Business version of the evidence variable
  # versionAlgorithm[x] : 0..1 How to compare versions. One of these 2
    fhir:versionAlgorithm [  a fhir:string ; string ]
    fhir:versionAlgorithm [  a fhir:Coding ; Coding ]
  fhir:name [ string ] ; # 0..1 I Name for this evidence variable (computer friendly)
  fhir:title [ string ] ; # 0..1 Name for this evidence variable (human friendly)
  fhir:shortTitle [ string ] ; # 0..1 Title for use in informal contexts
  fhir:status [ code ] ; # 1..1 draft | active | retired | unknown
  fhir:experimental [ boolean ] ; # 0..1 For testing purposes, not real usage
  fhir:date [ dateTime ] ; # 0..1 Date last changed
  fhir:publisher [ string ] ; # 0..1 Name of the publisher/steward (organization or individual)
  fhir:contact  ( [ ContactDetail ] ... ) ; # 0..* Contact details for the publisher
  fhir:description [ markdown ] ; # 0..1 Natural language description of the evidence variable
  fhir:note  ( [ Annotation ] ... ) ; # 0..* Used for footnotes or explanatory notes
  fhir:useContext  ( [ UsageContext ] ... ) ; # 0..* The context that the content is intended to support
  fhir:purpose [ markdown ] ; # 0..1 Why this EvidenceVariable is defined
  fhir:copyright [ markdown ] ; # 0..1 Use and/or publishing restrictions
  fhir:copyrightLabel [ string ] ; # 0..1 Copyright holder and year(s)
  fhir:approvalDate [ date ] ; # 0..1 When the resource was approved by publisher
  fhir:lastReviewDate [ date ] ; # 0..1 When the resource was last reviewed by the publisher
  fhir:effectivePeriod [ Period ] ; # 0..1 When the resource is expected to be used
  fhir:author  ( [ ContactDetail ] ... ) ; # 0..* Who authored the content
  fhir:editor  ( [ ContactDetail ] ... ) ; # 0..* Who edited the content
  fhir:reviewer  ( [ ContactDetail ] ... ) ; # 0..* Who reviewed the content
  fhir:endorser  ( [ ContactDetail ] ... ) ; # 0..* Who endorsed the content
  fhir:relatedArtifact  ( [ RelatedArtifact ] ... ) ; # 0..* Additional documentation, citations, etc
  fhir:actual [ boolean ] ; # 0..1 Actual or conceptual
  fhir:definition [ CodeableReference(Group) ] ; # 0..1 Defines the variable with a concept and/or Reference
  fhir:handling [ code ] ; # 0..1 continuous | dichotomous | ordinal | polychotomous
  fhir:category ( [ # 0..* A grouping for ordinal or polychotomous variables
    fhir:name [ string ] ; # 0..1 Description of the grouping
    # value[x] : 0..1 Definition of the grouping. One of these 4
      fhir:value [  a fhir:CodeableConcept ; CodeableConcept ]
      fhir:value [  a fhir:Quantity ; Quantity ]
      fhir:value [  a fhir:Range ; Range ]
      fhir:value [  a fhir:Reference ; Reference(Group) ]
  ] ... ) ;
]

Changes from both R4 and R4B

EvidenceVariable
EvidenceVariable.versionAlgorithm[x]
  • Added Element
EvidenceVariable.experimental
  • Added Element
EvidenceVariable.purpose
  • Added Element
EvidenceVariable.copyrightLabel
  • Added Element
EvidenceVariable.actual
  • Added Element
EvidenceVariable.definition
  • Added Element
EvidenceVariable.handling
  • Added Element
EvidenceVariable.category
  • Added Element
EvidenceVariable.category.name
  • Added Element
EvidenceVariable.category.value[x]
  • Added Element
EvidenceVariable.subtitle
  • Deleted
EvidenceVariable.jurisdiction
  • Deleted
EvidenceVariable.topic
  • Deleted
EvidenceVariable.type
  • Deleted
EvidenceVariable.characteristic
  • Deleted

See the Full Difference for further information

This analysis is available for R4 as XML or JSON and for R4B as XML or JSON.

Structure

NameFlagsCard.TypeDescription & Constraintsdoco
.. EvidenceVariable TU DomainResource A definition of an exposure, outcome, or other variable
+ Warning: Name should be usable as an identifier for the module by machine processing applications such as code generation

Elements defined in Ancestors: id, meta, implicitRules, language, text, contained, extension, modifierExtension
Interfaces Implemented: MetadataResource
... url ΣC 0..1 uri Canonical identifier for this evidence variable, represented as a URI (globally unique)
+ Warning: URL should not contain | or # - these characters make processing canonical references problematic
... identifier Σ 0..* Identifier Additional identifier for the evidence variable

... version Σ 0..1 string Business version of the evidence variable
... versionAlgorithm[x] Σ 0..1 How to compare versions
Binding: Version Algorithm (Extensible)
.... versionAlgorithmString string
.... versionAlgorithmCoding Coding
... name ΣC 0..1 string Name for this evidence variable (computer friendly)
... title Σ 0..1 string Name for this evidence variable (human friendly)
... shortTitle Σ 0..1 string Title for use in informal contexts
... status ?!Σ 1..1 code draft | active | retired | unknown
Binding: PublicationStatus (Required)
... experimental 0..1 boolean For testing purposes, not real usage
... date Σ 0..1 dateTime Date last changed
... publisher Σ 0..1 string Name of the publisher/steward (organization or individual)
... contact Σ 0..* ContactDetail Contact details for the publisher

... description Σ 0..1 markdown Natural language description of the evidence variable
... note 0..* Annotation Used for footnotes or explanatory notes

... useContext Σ 0..* UsageContext The context that the content is intended to support

... purpose 0..1 markdown Why this EvidenceVariable is defined
... copyright 0..1 markdown Use and/or publishing restrictions
... copyrightLabel T 0..1 string Copyright holder and year(s)
... approvalDate 0..1 date When the resource was approved by publisher
... lastReviewDate 0..1 date When the resource was last reviewed by the publisher
... effectivePeriod 0..1 Period When the resource is expected to be used
... author 0..* ContactDetail Who authored the content

... editor 0..* ContactDetail Who edited the content

... reviewer 0..* ContactDetail Who reviewed the content

... endorser 0..* ContactDetail Who endorsed the content

... relatedArtifact 0..* RelatedArtifact Additional documentation, citations, etc

... actual 0..1 boolean Actual or conceptual
... definition Σ 0..1 CodeableReference(Group) Defines the variable with a concept and/or Reference
Binding: Evidence Variable Definition (Example)
... handling 0..1 code continuous | dichotomous | ordinal | polychotomous
Binding: Evidence Variable Handling (Required)
... category 0..* BackboneElement A grouping for ordinal or polychotomous variables

.... name 0..1 string Description of the grouping
.... value[x] 0..1 Definition of the grouping
..... valueCodeableConcept CodeableConcept
..... valueQuantity Quantity
..... valueRange Range
..... valueReference Reference(Group)

doco Documentation for this format icon

See the Extensions for this resource

UML Diagram (Legend)

EvidenceVariable (DomainResource) +MetadataResourceAn absolute URI that is used to identify this evidence variable when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which an authoritative instance of this evidence variable is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the evidence variable is stored on different serversurl : uri [0..1]A formal identifier that is used to identify this evidence variable when it is represented in other formats, or referenced in a specification, model, design or an instanceidentifier : Identifier [0..*]The identifier that is used to identify this version of the evidence variable when it is referenced in a specification, model, design or instance. This is an arbitrary value managed by the evidence variable author and is not expected to be globally unique. For example, it might be a timestamp (e.g. yyyymmdd) if a managed version is not available. There is also no expectation that versions can be placed in a lexicographical sequence. To provide a version consistent with the Decision Support Service specification, use the format Major.Minor.Revision (e.g. 1.0.0). For more information on versioning knowledge assets, refer to the Decision Support Service specification. Note that a version is required for non-experimental active artifactsversion : string [0..1]Indicates the mechanism used to compare versions to determine which is more currentversionAlgorithm[x] : DataType [0..1] « string|Coding; null (Strength=Extensible) VersionAlgorithm+ »A natural language name identifying the evidence variable. This name should be usable as an identifier for the module by machine processing applications such as code generationname : string [0..1] « This element has or is affected by some invariantsC »A short, descriptive, user-friendly title for the evidence variabletitle : string [0..1]The short title provides an alternate title for use in informal descriptive contexts where the full, formal title is not necessaryshortTitle : string [0..1]The status of this evidence variable. Enables tracking the life-cycle of the content (this element modifies the meaning of other elements)status : code [1..1] « null (Strength=Required)PublicationStatus! »A Boolean value to indicate that this resource is authored for testing purposes (or education/evaluation/marketing) and is not intended to be used for genuine usageexperimental : boolean [0..1]The date (and optionally time) when the evidence variable was last significantly changed. The date must change when the business version changes and it must change if the status code changes. In addition, it should change when the substantive content of the evidence variable changesdate : dateTime [0..1]The name of the organization or individual responsible for the release and ongoing maintenance of the evidence variablepublisher : string [0..1]Contact details to assist a user in finding and communicating with the publishercontact : ContactDetail [0..*]A free text natural language description of the evidence variable from a consumer's perspectivedescription : markdown [0..1]A human-readable string to clarify or explain concepts about the resourcenote : Annotation [0..*]The content was developed with a focus and intent of supporting the contexts that are listed. These contexts may be general categories (gender, age, ...) or may be references to specific programs (insurance plans, studies, ...) and may be used to assist with indexing and searching for appropriate evidence variable instancesuseContext : UsageContext [0..*]Explanation of why this EvidenceVariable is needed and why it has been designed as it haspurpose : markdown [0..1]A copyright statement relating to the resource and/or its contents. Copyright statements are generally legal restrictions on the use and publishing of the resourcecopyright : markdown [0..1]A short string (<50 characters), suitable for inclusion in a page footer that identifies the copyright holder, effective period, and optionally whether rights are resctricted. (e.g. 'All rights reserved', 'Some rights reserved')copyrightLabel : string [0..1]The date on which the resource content was approved by the publisher. Approval happens once when the content is officially approved for usage. See guidance around (not) making local changes to elements [here](canonicalresource.html#localization)approvalDate : date [0..1]The date on which the resource content was last reviewed. Review happens periodically after approval but does not change the original approval datelastReviewDate : date [0..1]The period during which the resource content was or is planned to be in active useeffectivePeriod : Period [0..1]An individiual or organization primarily involved in the creation and maintenance of the contentauthor : ContactDetail [0..*]An individual or organization primarily responsible for internal coherence of the contenteditor : ContactDetail [0..*]An individual or organization asserted by the publisher to be primarily responsible for review of some aspect of the contentreviewer : ContactDetail [0..*]An individual or organization asserted by the publisher to be responsible for officially endorsing the content for use in some settingendorser : ContactDetail [0..*]Related artifacts such as additional documentation, justification, or bibliographic referencesrelatedArtifact : RelatedArtifact [0..*]True if the actual variable measured, false if a conceptual representation of the intended variableactual : boolean [0..1]Defines the variable with a concept and/or Referencedefinition : CodeableReference [0..1] « Group; null (Strength=Example) EvidenceVariableDefinition?? »The method of handling in statistical analysishandling : code [0..1] « null (Strength=Required)EvidenceVariableHandling! »CategoryDescription of the groupingname : string [0..1]Definition of the groupingvalue[x] : DataType [0..1] « CodeableConcept|Quantity|Range| Reference(Group) »A grouping for ordinal or polychotomous variablescategory[0..*]

XML Template

<EvidenceVariable xmlns="http://hl7.org/fhir"> doco
 <!-- from Resource: id, meta, implicitRules, and language -->
 <!-- from DomainResource: text, contained, extension, and modifierExtension -->
 <url value="[uri]"/><!-- 0..1 Canonical identifier for this evidence variable, represented as a URI (globally unique) -->
 <identifier><!-- 0..* Identifier Additional identifier for the evidence variable --></identifier>
 <version value="[string]"/><!-- 0..1 Business version of the evidence variable -->
 <versionAlgorithm[x]><!-- 0..1 string|Coding How to compare versions --></versionAlgorithm[x]>
 <name value="[string]"/><!-- I 0..1 Name for this evidence variable (computer friendly) -->
 <title value="[string]"/><!-- 0..1 Name for this evidence variable (human friendly) -->
 <shortTitle value="[string]"/><!-- 0..1 Title for use in informal contexts -->
 <status value="[code]"/><!-- 1..1 draft | active | retired | unknown -->
 <experimental value="[boolean]"/><!-- 0..1 For testing purposes, not real usage -->
 <date value="[dateTime]"/><!-- 0..1 Date last changed -->
 <publisher value="[string]"/><!-- 0..1 Name of the publisher/steward (organization or individual) -->
 <contact><!-- 0..* ContactDetail Contact details for the publisher --></contact>
 <description value="[markdown]"/><!-- 0..1 Natural language description of the evidence variable -->
 <note><!-- 0..* Annotation Used for footnotes or explanatory notes --></note>
 <useContext><!-- 0..* UsageContext The context that the content is intended to support --></useContext>
 <purpose value="[markdown]"/><!-- 0..1 Why this EvidenceVariable is defined -->
 <copyright value="[markdown]"/><!-- 0..1 Use and/or publishing restrictions -->
 <copyrightLabel value="[string]"/><!-- 0..1 Copyright holder and year(s) -->
 <approvalDate value="[date]"/><!-- 0..1 When the resource was approved by publisher -->
 <lastReviewDate value="[date]"/><!-- 0..1 When the resource was last reviewed by the publisher -->
 <effectivePeriod><!-- 0..1 Period When the resource is expected to be used --></effectivePeriod>
 <author><!-- 0..* ContactDetail Who authored the content --></author>
 <editor><!-- 0..* ContactDetail Who edited the content --></editor>
 <reviewer><!-- 0..* ContactDetail Who reviewed the content --></reviewer>
 <endorser><!-- 0..* ContactDetail Who endorsed the content --></endorser>
 <relatedArtifact><!-- 0..* RelatedArtifact Additional documentation, citations, etc --></relatedArtifact>
 <actual value="[boolean]"/><!-- 0..1 Actual or conceptual -->
 <definition><!-- 0..1 CodeableReference(Group) Defines the variable with a concept and/or Reference --></definition>
 <handling value="[code]"/><!-- 0..1 continuous | dichotomous | ordinal | polychotomous -->
 <category>  <!-- 0..* A grouping for ordinal or polychotomous variables -->
  <name value="[string]"/><!-- 0..1 Description of the grouping -->
  <value[x]><!-- 0..1 CodeableConcept|Quantity|Range|Reference(Group) Definition of the grouping --></value[x]>
 </category>
</EvidenceVariable>

JSON Template

{doco
  "resourceType" : "EvidenceVariable",
  // from Resource: id, meta, implicitRules, and language
  // from DomainResource: text, contained, extension, and modifierExtension
  "url" : "<uri>", // Canonical identifier for this evidence variable, represented as a URI (globally unique)
  "identifier" : [{ Identifier }], // Additional identifier for the evidence variable
  "version" : "<string>", // Business version of the evidence variable
  // versionAlgorithm[x]: How to compare versions. One of these 2:
  "versionAlgorithmString" : "<string>",
  "versionAlgorithmCoding" : { Coding },
  "name" : "<string>", // I Name for this evidence variable (computer friendly)
  "title" : "<string>", // Name for this evidence variable (human friendly)
  "shortTitle" : "<string>", // Title for use in informal contexts
  "status" : "<code>", // R!  draft | active | retired | unknown
  "experimental" : <boolean>, // For testing purposes, not real usage
  "date" : "<dateTime>", // Date last changed
  "publisher" : "<string>", // Name of the publisher/steward (organization or individual)
  "contact" : [{ ContactDetail }], // Contact details for the publisher
  "description" : "<markdown>", // Natural language description of the evidence variable
  "note" : [{ Annotation }], // Used for footnotes or explanatory notes
  "useContext" : [{ UsageContext }], // The context that the content is intended to support
  "purpose" : "<markdown>", // Why this EvidenceVariable is defined
  "copyright" : "<markdown>", // Use and/or publishing restrictions
  "copyrightLabel" : "<string>", // Copyright holder and year(s)
  "approvalDate" : "<date>", // When the resource was approved by publisher
  "lastReviewDate" : "<date>", // When the resource was last reviewed by the publisher
  "effectivePeriod" : { Period }, // When the resource is expected to be used
  "author" : [{ ContactDetail }], // Who authored the content
  "editor" : [{ ContactDetail }], // Who edited the content
  "reviewer" : [{ ContactDetail }], // Who reviewed the content
  "endorser" : [{ ContactDetail }], // Who endorsed the content
  "relatedArtifact" : [{ RelatedArtifact }], // Additional documentation, citations, etc
  "actual" : <boolean>, // Actual or conceptual
  "definition" : { CodeableReference(Group) }, // Defines the variable with a concept and/or Reference
  "handling" : "<code>", // continuous | dichotomous | ordinal | polychotomous
  "category" : [{ // A grouping for ordinal or polychotomous variables
    "name" : "<string>", // Description of the grouping
    // value[x]: Definition of the grouping. One of these 4:
    "valueCodeableConcept" : { CodeableConcept },
    "valueQuantity" : { Quantity },
    "valueRange" : { Range },
    "valueReference" : { Reference(Group) }
  }]
}

Turtle Template

@prefix fhir: <http://hl7.org/fhir/> .doco


[ a fhir:EvidenceVariable;
  fhir:nodeRole fhir:treeRoot; # if this is the parser root

  # from Resource: .id, .meta, .implicitRules, and .language
  # from DomainResource: .text, .contained, .extension, and .modifierExtension
  fhir:url [ uri ] ; # 0..1 Canonical identifier for this evidence variable, represented as a URI (globally unique)
  fhir:identifier  ( [ Identifier ] ... ) ; # 0..* Additional identifier for the evidence variable
  fhir:version [ string ] ; # 0..1 Business version of the evidence variable
  # versionAlgorithm[x] : 0..1 How to compare versions. One of these 2
    fhir:versionAlgorithm [  a fhir:string ; string ]
    fhir:versionAlgorithm [  a fhir:Coding ; Coding ]
  fhir:name [ string ] ; # 0..1 I Name for this evidence variable (computer friendly)
  fhir:title [ string ] ; # 0..1 Name for this evidence variable (human friendly)
  fhir:shortTitle [ string ] ; # 0..1 Title for use in informal contexts
  fhir:status [ code ] ; # 1..1 draft | active | retired | unknown
  fhir:experimental [ boolean ] ; # 0..1 For testing purposes, not real usage
  fhir:date [ dateTime ] ; # 0..1 Date last changed
  fhir:publisher [ string ] ; # 0..1 Name of the publisher/steward (organization or individual)
  fhir:contact  ( [ ContactDetail ] ... ) ; # 0..* Contact details for the publisher
  fhir:description [ markdown ] ; # 0..1 Natural language description of the evidence variable
  fhir:note  ( [ Annotation ] ... ) ; # 0..* Used for footnotes or explanatory notes
  fhir:useContext  ( [ UsageContext ] ... ) ; # 0..* The context that the content is intended to support
  fhir:purpose [ markdown ] ; # 0..1 Why this EvidenceVariable is defined
  fhir:copyright [ markdown ] ; # 0..1 Use and/or publishing restrictions
  fhir:copyrightLabel [ string ] ; # 0..1 Copyright holder and year(s)
  fhir:approvalDate [ date ] ; # 0..1 When the resource was approved by publisher
  fhir:lastReviewDate [ date ] ; # 0..1 When the resource was last reviewed by the publisher
  fhir:effectivePeriod [ Period ] ; # 0..1 When the resource is expected to be used
  fhir:author  ( [ ContactDetail ] ... ) ; # 0..* Who authored the content
  fhir:editor  ( [ ContactDetail ] ... ) ; # 0..* Who edited the content
  fhir:reviewer  ( [ ContactDetail ] ... ) ; # 0..* Who reviewed the content
  fhir:endorser  ( [ ContactDetail ] ... ) ; # 0..* Who endorsed the content
  fhir:relatedArtifact  ( [ RelatedArtifact ] ... ) ; # 0..* Additional documentation, citations, etc
  fhir:actual [ boolean ] ; # 0..1 Actual or conceptual
  fhir:definition [ CodeableReference(Group) ] ; # 0..1 Defines the variable with a concept and/or Reference
  fhir:handling [ code ] ; # 0..1 continuous | dichotomous | ordinal | polychotomous
  fhir:category ( [ # 0..* A grouping for ordinal or polychotomous variables
    fhir:name [ string ] ; # 0..1 Description of the grouping
    # value[x] : 0..1 Definition of the grouping. One of these 4
      fhir:value [  a fhir:CodeableConcept ; CodeableConcept ]
      fhir:value [  a fhir:Quantity ; Quantity ]
      fhir:value [  a fhir:Range ; Range ]
      fhir:value [  a fhir:Reference ; Reference(Group) ]
  ] ... ) ;
]

Changes from both R4 and R4B

EvidenceVariable
EvidenceVariable.versionAlgorithm[x]
  • Added Element
EvidenceVariable.experimental
  • Added Element
EvidenceVariable.purpose
  • Added Element
EvidenceVariable.copyrightLabel
  • Added Element
EvidenceVariable.actual
  • Added Element
EvidenceVariable.definition
  • Added Element
EvidenceVariable.handling
  • Added Element
EvidenceVariable.category
  • Added Element
EvidenceVariable.category.name
  • Added Element
EvidenceVariable.category.value[x]
  • Added Element
EvidenceVariable.subtitle
  • Deleted
EvidenceVariable.jurisdiction
  • Deleted
EvidenceVariable.topic
  • Deleted
EvidenceVariable.type
  • Deleted
EvidenceVariable.characteristic
  • Deleted

See the Full Difference for further information

This analysis is available for R4 as XML or JSON and for R4B as XML or JSON.

 

Additional definitions: Master Definition XML + JSON, XML Schema/Schematron + JSON Schema, ShEx (for Turtle) , the spreadsheet version & the dependency analysis

14.14.4.1 Terminology Bindings

Path ValueSet Type Documentation
EvidenceVariable.versionAlgorithm[x] VersionAlgorithm Extensible

Indicates the mechanism used to compare versions to determine which is more current.
EvidenceVariable.status PublicationStatus Required

The lifecycle status of an artifact.
EvidenceVariable.definition EvidenceVariableDefinition Example

Examples of terms that represent an evidence variable definition.
EvidenceVariable.handling EvidenceVariableHandling Required

The handling of the variable in statistical analysis for exposures or outcomes (E.g. Dichotomous, Continuous, Descriptive).

14.14.4.2 Constraints

UniqueKeyLevelLocationDescriptionExpression
img cnl-0Warning (base)Name should be usable as an identifier for the module by machine processing applications such as code generationname.exists() implies name.matches('^[A-Z]([A-Za-z0-9_]){1,254}$')
img cnl-1Warning EvidenceVariable.urlURL should not contain | or # - these characters make processing canonical references problematicexists() implies matches('^[^|# ]+$')

14.14.5 Search Parameters

Search parameters for this resource. See also the full list of search parameters for this resource, and check the Extensions registry for search parameters on extensions related to this resource. The common parameters also apply. See Searching for more information about searching in REST, messaging, and services.

Name Type Description Expression In Common
composed-of reference What resource is being referenced EvidenceVariable.relatedArtifact.where(type='composed-of').resource
(Any)		 6 Resources
context token A use context assigned to the evidence variable (EvidenceVariable.useContext.value.ofType(CodeableConcept)) 30 Resources
context-quantity quantity A quantity- or range-valued use context assigned to the evidence variable (EvidenceVariable.useContext.value.ofType(Quantity)) | (EvidenceVariable.useContext.value.ofType(Range)) 30 Resources
context-type token A type of use context assigned to the evidence variable EvidenceVariable.useContext.code 30 Resources
context-type-quantity composite A use context type and quantity- or range-based value assigned to the evidence variable On EvidenceVariable.useContext:
  context-type: code
  context-quantity: value.ofType(Quantity) | value.ofType(Range)		 30 Resources
context-type-value composite A use context type and value assigned to the evidence variable On EvidenceVariable.useContext:
  context-type: code
  context: value.ofType(CodeableConcept)		 30 Resources
date date The evidence variable publication date EvidenceVariable.date 30 Resources
depends-on reference What resource is being referenced EvidenceVariable.relatedArtifact.where(type='depends-on').resource
(Any)		 6 Resources
derived-from reference What resource is being referenced EvidenceVariable.relatedArtifact.where(type='derived-from').resource
(Any)		 10 Resources
description string The description of the evidence variable EvidenceVariable.description 28 Resources
identifier token External identifier for the evidence variable EvidenceVariable.identifier 36 Resources
name string Computationally friendly name of the evidence variable EvidenceVariable.name 27 Resources
predecessor reference What resource is being referenced EvidenceVariable.relatedArtifact.where(type='predecessor').resource
(Any)		 10 Resources
publisher string Name of the publisher of the evidence variable EvidenceVariable.publisher 30 Resources
status token The current status of the evidence variable EvidenceVariable.status 36 Resources
successor reference What resource is being referenced EvidenceVariable.relatedArtifact.where(type='successor').resource
(Any)		 6 Resources
title string The human-friendly name of the evidence variable EvidenceVariable.title 27 Resources
topic token Topics associated with the EvidenceVariable 10 Resources
url uri The uri that identifies the evidence variable EvidenceVariable.url 35 Resources
version token The business version of the evidence variable EvidenceVariable.version 31 Resources